Question

QII. Evaluate the following:
if x = -1, y = 2,z = -2,,
1.2 x² - y²
2.2xy² - 3 yz + xz²
3.5 + 4x³ -2z²​

Answer 1

Answer:

1. -2
2. 0
3. -7

Step-by-step explanation:

refer to the attachment